My point was going to be that these are concepts and protocols rather than programs, and that you would use an actual program (eg TortoiseGit) to actually use i

My point was going to be that these are concepts and protocols rather than programs, and that you would use an actual program (eg TortoiseGit) to actually use it. But then I read your comment and realised in *nix the program is actually called "git". So I concede :-)